package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.List;

@Service
public class CategoryServiceImpl implements CategoryService {

    @Autowired
    private CategoryMapper categoryMapper;

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private SetmealMapper setmealMapper;

    /**
     * 分类页分页查询
     * @param pageQueryDTO
     * @return
     */
    @Override
    public PageResult queryPage(CategoryPageQueryDTO pageQueryDTO) {
        PageHelper.startPage(pageQueryDTO.getPage(),pageQueryDTO.getPageSize());
        Page<Category> page = categoryMapper.pageQuery(pageQueryDTO);
        PageResult pageResult = new PageResult(page.getTotal(),page.getResult());
        return pageResult;
    }

    /**
     * 启用or禁用分类
     * @param status
     * @param id
     */
    @Override
    public void startOrStopCategory(Integer status, Long id) {
        Category category = Category.builder()
                .status(status)
                .id(id)
//                .updateTime(LocalDateTime.now())
//                .updateUser(BaseContext.getCurrentId())
                .build();
        categoryMapper.update(category);
    }

    /**
     * 新增分类
     * @param categoryDTO
     */
    @Override
    public void addCategory(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);
//        category.setCreateTime(LocalDateTime.now());
//        category.setUpdateTime(LocalDateTime.now());
//        category.setCreateUser(BaseContext.getCurrentId());
//        category.setUpdateUser(BaseContext.getCurrentId());
        category.setStatus(1);
        categoryMapper.insertCategory(category);
    }

    /**
     * 根据id删除分类
     * @param id
     */
    @Override
    public void deleteById(Long id) {
        if (dishMapper.countByCategoryId(id) != 0) {
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

        if (setmealMapper.countByCategoryId(id) != 0) {
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }

        categoryMapper.delById(id);
    }

    /**
     * 根据type查询分类
     * @param type
     * @return
     */
    @Override
    public List<Category> queryByType(Integer type) {
        CategoryPageQueryDTO categoryPageQueryDTO = CategoryPageQueryDTO.builder().type(type).build();
        return categoryMapper.pageQuery(categoryPageQueryDTO);
    }

    /**
     * 更新分类信息
     * @param categoryDTO
     */
    @Override
    public void updateCategory(CategoryDTO categoryDTO) {
        Category category = Category.builder()
                .id(categoryDTO.getId())
                .type(categoryDTO.getType())
                .name(categoryDTO.getName())
                .sort(categoryDTO.getSort())
//                .updateUser(BaseContext.getCurrentId())
//                .updateTime(LocalDateTime.now())
                .build();
        categoryMapper.update(category);
    }
}
